Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 238, Issue -, Pages 447-454Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.07.084
Keywords
Indium oxide; Nanowires; Gas nanosensor; Chemoresistor
Funding
- Spanish Ministerio de Economia y Competitividad [TEC2013-48147-C6]
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Indium oxide nanostructures have been prepared by carbothermal reduction method. From them, nanowires have been structurally and optically characterized using X-ray diffraction, scanning and transmission electron microscopy and photoluminescence. The indium oxide nanowires have been removed from the substrate and contacted by Focused Electron-and Focused Ion-Beam Induced Deposition techniques to interdigitates on suspended microhotplates, which allow heating up to 300 degrees C with a low power consumption of only 8 mW. The gas response of the tested devices towards ethanol, carbon monoxide and nitrogen dioxide diluted in dry synthetic air at different concentrations and temperatures has been carried out showing a selectivity towards ethanol with responses up to 50% at temperatures between 200 and 300 degrees C, while only small response to high concentrations of carbon monoxide and nitrogen dioxide is observed. (C) 2016 Elsevier B.V. All rights reserved.
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